Following the discovery of a beautiful kris on board a sunken wreck, the Wallace Boys and their Singaporean friends, Kheng Peng and Zainal, plan an exciting hunt for an ancient temple lost deep in the rainforests of the Malay Peninsula. However, their search is interrupted by a desperate group of ex-Communists and bandits who have kidnapped one of the world's most famous rock singers who has been hauled off the luxurious Eastern and Oriental Express train. Braving the fiendishly booby-trapped approaches to the bandits' lair through the dense jungle, can the boys save the rock superstar, Flavia? How does an immense king cobra feature in their plans? Do they find the Pagodas of Pahang in the jungle?